Finding the Fourth Proportional to 21,098.88, 31,647.72 and 5,516.52

Step by Step Solution

1. Step 1: Write the proportion equation
   21,098.88 : 31,647.72 = 5,516.52 : x
2. Step 2: Convert to fraction form
   21,098.88/31,647.72 = 5,516.52/x
3. Step 3: Cross multiply
   21,098.88x = 31,647.72 × 5,516.52
4. Step 4: Simplify right side
   21,098.88x = 174,585,280.33
5. Step 5: Solve for x
   x = 174,585,280.33/21,098.88
6. Step 6: Final answer
   x = 8,274.62